Senior Node.js Developer

Flosum

. Build high-performance backend services and APIs for enterprise-grade SaaS applications .

Posted 11/4/2026full-timeRemote • BelgiumSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building high-performance backend services and APIs for enterprise-grade SaaS applications, with a strong focus on Node.js microservices, TypeScript, and real-time data processing. Proficient in CI/CD pipeline tooling and collaboration with cross-functional teams to deliver scalable and secure solutions.

Highest-signal resume keywords

Node.js DevelopmentTypeScript ProficiencyRESTful API DesignSQL and NoSQL DatabasesSalesforce Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Node.jsTypeScriptRESTful API DesignSQLNoSQLAsynchronous ProgrammingEvent-Driven ArchitectureGit WorkflowsCI/CD PipelinesSalesforce API Integrations

Soft Skills

CollaborationCommunication

Tools & Technologies

DockerAWSGCPAzureDevOps Toolchains

Industry Keywords

Enterprise B2B SaaSSOC 2HIPAAFedRAMPGDPR

Tech Stack

Tools & technologies

AWSAzureCloudDockerGoogle Cloud PlatformJavaScriptMicroservicesNode.jsNoSQLSQLTypeScriptVisualforceVue.js

About the role

Key responsibilities & impact

Build high-performance backend services and APIs for enterprise-grade SaaS applications
Develop scalable, secure Node.js microservices and Salesforce ecosystem integrations
Create modern front-end experiences using Vue.js and TypeScript
Build CI/CD pipeline tooling, automation frameworks, and developer productivity infrastructure
Implement real-time data processing and event-driven architectures for sensitive enterprise data at scale
Own significant parts of the architecture and ship production code
Collaborate directly with engineering leadership, product managers, and the CEO

Requirements

What you’ll need

5+ years of professional Node.js development in production environments
Expert-level understanding of asynchronous programming, event loops, streams, and the Node.js runtime
Understanding of backpressure, setImmediate, process.nextTick, and unhandled promise rejections
Deep experience with TypeScript in production codebases
Strong command of RESTful API design, OAuth 2.0, JWT, and API security best practices
Proven experience with SQL and NoSQL databases, query optimization, data modeling, and schema performance at scale
Proficiency with Git workflows, code review, automated unit, integration, and end-to-end testing, and CI/CD pipelines
Understanding of Docker, cloud services such as AWS, GCP, or Azure, and infrastructure-as-code principles
Long-term commitment to a full-time engagement
Salesforce development experience with Apex, Lightning Web Components, Visualforce, or Salesforce API integrations preferred
Experience with Salesforce ISV (AppExchange) products preferred
Vue.js, Vue 3 Composition API, and state management experience preferred
Experience with enterprise B2B SaaS and compliance requirements such as SOC 2, HIPAA, FedRAMP, or GDPR preferred
Familiarity with DevOps/DevSecOps toolchains in the Salesforce ecosystem preferred

Benefits

Comp & perks

Competitive compensation commensurate with your experience and impact
Direct collaboration with the founding team and engineering leadership — your voice will carry weight from day one
A profitable, stable company with aggressive growth plans — no funding anxiety, no runway clock
The opportunity to work on enterprise-grade products used by some of the largest organizations in the world
Meaningful technical challenges: security, compliance, scale, and reliability at the intersection of Node.js and Salesforce
A culture that rewards ownership, speed, and craftsmanship over politics and hierarchy
Remote-first flexibility with a results-oriented work environment